Machine for setting diamonds in metal.



N0. 700,82. Patented May l3, I902.

I J. BREJCHA.

MACHINE FOR SETTING DIAMONDS IN METAL.

(Application filed Feb. 14, 1902.)

(N0 Nodal.)

attest/x ,z'zwazzan UNITED STATES PATENT OFFI E.

JOSEF BREJC HALOF STRASB URGr-N-EUDORF, GERMANY.

MACHINE FOR SETTING DIAMONDS IN M'ETAL.

SI-ECIFIGATION forming part of Letters Patent N 0. 700,132 dated May 13,1902. Application filed February 14, 1902. 'Serial No. 94,129. (NomodeLl To all whom it maycmwern; I 1

Be it known that I,- JOSEF BREJOHA, a subject of the Emperor ofGermany,and'a resident of Strasburg-Neudorf, Alsace-Lorraine, Germany, haveinvented certain new and useful Improvements in" Machines for SettingDiamonds in Metal, of which the following is a specification.

My invention relates to a machine for setting diamonds and other hardsubstances in metal. Hitherto such substances were placed in a cold orwarm setting, which, if cold, did

not quiteinclose the stone, which thus could easily be forced out, whileby setting in heated material the stone was liable to be injured and itsdurability to be much impaired. In

' the present invention the substance to be set is pressed into a hotsetting in such a manner that a cooling liquid immediately flows overthe setting and prevents the substance from becoming overheated. q

A form of construction of the invention is illustrated in theaccompanying drawings, in which- Figure 1 shows the machine insideelevation. Fig. 2 is a detail thereof. Fig. 3 is an end view of themachine.

Between the frames a and b rests a plate 0, which by means of links 01supports a spring c. On this spring rests a counter support f, on whichthe setting material 9 is placed.

Two press-heads h and 2' canbe adjusted by means of sliding pieces landscrews'm. A lever 0, pivoted on a bolt 'n, rests in the frame ct. Inthis lever there is a valve 10, which is controlled by a spring q and ismovable in the holder r. Liquid can penetrate into the' valve throughthe tube 8, connected with a rubber tubet.

For setting the stone the metal is made'redhot and the stone inserted bypressing on the lever 0.' As soon as the stone is in place in the metal.setting theivalvep is pressed upward-and cooling liquid pours throughthe tube 25 onto the setting. By moving the lever ing injury thereto.The substance to be, setstone, &;c.is brought quite'to the bottom of thesetting metal before the stone is firmly pressed and cooled, whereby ifthe proper strength of spring is used no excessive pres sure is appliedto the stone, because the spring q easily yields, and only when thevalve-casing'rpresses the setting metal g is the spring pressed downandthe metal compressed.

Having .described jmy invention, what I claim as new, and desire tosecure by Letters Patent, is* V r 1. In amachine fo'r settinghardsubstances in metal, the combination of a support for the 'metal piece,a lever having means for pressing thesaid substance into the metal, atube connected with thelever, a port leading through the lever fordirectinga cooling liquid to the metal piece and a valve carried by thelever and controlling saidport, substantially as described. I a. g

2. In combination, a yielding support for a metalipiece, clamping headsor links having pivoted outer'ends, said links being inclined towardeach other and having their inner ends resting upon the yielding supportwith a space between for the metal piece, and means for pressing thestone downwardly into the metal piece, said support yielding to permitthe links to move downwardly to compress the metalpiece between theiradjacent ends and upon the stone, substantially as described.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

' J OSEF BREJGHA; Witnesses:

- SIEGFRIED HEMSER,

MAX ADLER.

